The spry old man stopped and stared at his well-dressed visitor. “And why should I keep working?”

“To sell more popcorn.”

“And why sell more popcorn?”

“Because the more popcorn you sell, the more money you make. The more money you make, the richer you are. The richer you are, the more popcorn stands you can buy. The more popcorn stands you buy, the more peddlers sell your product, and the richer you become. And when you have enough, you can stop working, sell your popcorn stands, stay home, and sit on the porch with your wife and drink tea.”